
public class Test {

    public static void main(String[] args) {

        CPU cpu=new CPU(); //创建CPU对象cpu

        cpu.speed=2200; //设置cpu的速度为2200

        HardDisk disk=new HardDisk();

        disk.amount=200; //设置disk的容量为200

        PC pc=new PC();

        pc.setCPU(cpu);

        pc.setHardDisk(disk);

        pc.show();

    }

}